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<h1 class="title toc-ignore">Continuous Installation</h1>
<h4 class="author"><em>Jonathan M. Hill</em></h4>
<h4 class="date"><em>2018-09-20</em></h4>



<p>RInno supports continuous installation of shiny apps through APIs to public/private BitBucket and GitHub repos. If you follow the directions in this vignette, RInno apps will call your repository each time a user clicks their icon. If there have been any hotfixes or releases since installation, the app automatically updates, letting its user know through a windows progress bar, and then opens normally.</p>
<p>This feature requires:</p>
<ol style="list-style-type: decimal">
<li>A URL to the app’s repo, <code>app_repo_url</code>. This should be the full URL like, <a href="https://github.com/Dripdrop12/RInnoApp" class="uri">https://github.com/Dripdrop12/RInnoApp</a>.</li>
<li>A release tag on GitHub, or a version on BitBucket. If you forget to create a release, your app will error when it calls <code>get_remote_version</code> and <code>parsed_response</code>’s subscript will be “out of bounds.”</li>
<li>An R package structure that can be installed via <code>remotes::install_github</code> or <code>remotes::install_bitbucket</code>. I recommend testing this before compiling your RInno .exe.</li>
</ol>
<p>The release tag or version is compared with the package DESCRIPTION file, i.e. <code>0.0.0.9000</code>, to determine if the app should call <code>remotes::install_github</code> or <code>remotes::install_bitbucket</code> respectively. So update the app’s version in both places (2 &amp; 3 above) with each new version, otherwise the app will re-install every time its icon is clicked.</p>
<div id="r-package-structure" class="section level2">
<h2>R Package Structure</h2>
<p>To connect a shiny app to a remote repository, the app must be on Github or Bitbucket, and it must be in the <code>inst/app</code> directory of an R package. The easiest way to do this is by creating a new project in RStudio and selecting R Package. See Dean Attali’s <a href="http://deanattali.com/2015/04/21/r-package-shiny-app/">Blog</a> for a detailed tutorial on including shiny apps in an R package.</p>
<table>
<thead>
<tr class="header">
<th align="right">package/</th>
<th align="left"></th>
<th align="left"></th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td align="right"></td>
<td align="left">inst/app/</td>
<td align="left"></td>
</tr>
<tr class="even">
<td align="right"></td>
<td align="left"></td>
<td align="left">ui.R</td>
</tr>
<tr class="odd">
<td align="right"></td>
<td align="left"></td>
<td align="left">server.R</td>
</tr>
<tr class="even">
<td align="right"></td>
<td align="left">R</td>
<td align="left"></td>
</tr>
<tr class="odd">
<td align="right"></td>
<td align="left">…</td>
<td align="left"></td>
</tr>
<tr class="even">
<td align="right"></td>
<td align="left">DESCRIPTION</td>
<td align="left"></td>
</tr>
<tr class="odd">
<td align="right"></td>
<td align="left">…</td>
<td align="left"></td>
</tr>
</tbody>
</table>
<p>The package should be called <code>app_name</code>, and within the DESCRIPTION file, <code>Package: app_name</code>. Make sure your app can be installed as a package by typing <code>ctrl</code>+<code>shift</code>+<code>B</code>.</p>
</div>
<div id="bitbucket" class="section level2">
<h2>Bitbucket</h2>
<p>On Bitbucket, enable issue tracking in the repo’s settings. This will add Versions to the Issues section and make it accessible via BitBucket’s API. Add <code>0.0.0.9000</code> to Versions and within the package’s DESCRIPTION file, <code>Version: 0.0.0.9000</code>.</p>
<p>Then create an RInno installer:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">create_app</span>(
  <span class="dt">app_name     =</span> <span class="st">&quot;myapp&quot;</span>,
  <span class="dt">app_repo_url =</span> <span class="st">&quot;https://bitbucket.org/fi_consulting/myapp&quot;</span>,
  <span class="dt">pkgs         =</span> <span class="kw">c</span>(<span class="st">&quot;magrittr&quot;</span>, <span class="st">&quot;httr&quot;</span>, <span class="st">&quot;shiny&quot;</span>, <span class="st">&quot;myapp&quot;</span>),
  <span class="dt">auth_user    =</span> <span class="st">&quot;&lt;read_only_username&gt;&quot;</span>,
  <span class="dt">auth_pw      =</span> <span class="st">&quot;&lt;password&gt;&quot;</span>)

<span class="kw">compile_iss</span>()</code></pre></div>
<p>Or for custom installers, directly through <code>create_config</code>:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">create_config</span>(
  <span class="dt">app_name     =</span> <span class="st">&quot;myapp&quot;</span>, 
  <span class="dt">R_version    =</span> <span class="st">&quot;3.3.2&quot;</span>, 
  <span class="dt">app_dir      =</span> <span class="st">&quot;app&quot;</span>,
  <span class="dt">pkgs         =</span> <span class="kw">c</span>(<span class="st">&quot;magrittr&quot;</span>, <span class="st">&quot;httr&quot;</span>, <span class="st">&quot;shiny&quot;</span>, <span class="st">&quot;myapp&quot;</span>),
  <span class="dt">app_repo_url =</span> <span class="st">&quot;https://bitbucket.org/fi_consulting/myapp&quot;</span>,
  <span class="dt">auth_user    =</span> <span class="st">&quot;&lt;read_only_username&gt;&quot;</span>, 
  <span class="dt">auth_pw      =</span> <span class="st">&quot;&lt;password&gt;&quot;</span>)

<span class="co"># -------------------------------------------------- Many steps later</span>
<span class="kw">compile_iss</span>()</code></pre></div>
<p>Shiny apps compiled/installed this way will call the BitBucket API on start up, and re-install every time there is an update to the BitBucket repo’s version. For public repos, you do not need to provide <code>auth_user</code> and <code>auth_pw</code>.</p>
</div>
<div id="github" class="section level2">
<h2>GitHub</h2>
<p>On GitHub, create a release for the app. The release(s) tab is located on the repo’s homepage next to branch(es) just before contributor(s). Add <code>0.0.0.9000</code> to the release tag and within the package’s DESCRIPTION file, <code>Version: 0.0.0.9000</code>. This will make the release tag accessible via GitHub’s API. For private repos, you will need to create an app <a href="https://github.com/settings/tokens">token</a>.</p>
<p>Then create an RInno installer:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">create_app</span>(
  <span class="dt">app_name     =</span> <span class="st">&quot;myapp&quot;</span>, 
  <span class="dt">app_repo_url =</span> <span class="st">&quot;https://github.com/fi_consulting/myapp&quot;</span>,
  <span class="dt">pkgs         =</span> <span class="kw">c</span>(<span class="st">&quot;magrittr&quot;</span>, <span class="st">&quot;httr&quot;</span>, <span class="st">&quot;shiny&quot;</span>, <span class="st">&quot;myapp&quot;</span>),
  <span class="dt">auth_token   =</span> <span class="st">&quot;&lt;app_token&gt;&quot;</span>)

<span class="kw">compile_iss</span>()</code></pre></div>
<p>Or for custom installers, directly through <code>create_config</code>:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">create_config</span>(
  <span class="dt">app_name     =</span> <span class="st">&quot;myapp&quot;</span>, 
  <span class="dt">R_version    =</span> <span class="st">&quot;3.3.2&quot;</span>, 
  <span class="dt">app_dir      =</span> <span class="st">&quot;app&quot;</span>, 
  <span class="dt">app_repo_url =</span> <span class="st">&quot;https://github.com/fi_consulting/myapp&quot;</span>,
  <span class="dt">pkgs         =</span> <span class="kw">c</span>(<span class="st">&quot;magrittr&quot;</span>, <span class="st">&quot;httr&quot;</span>, <span class="st">&quot;shiny&quot;</span>, <span class="st">&quot;myapp&quot;</span>),
  <span class="dt">auth_token   =</span> <span class="st">&quot;&lt;app_token&gt;&quot;</span>)

<span class="co"># -------------------------------------------------- Many steps later</span>
<span class="kw">compile_iss</span>()</code></pre></div>
<p>Shiny apps compiled/installed this way will call the GitHub API on start up, and re-install every time there is an update to the GitHub repo’s most recent release tag. For public repos, you do not need to provide <code>auth_token</code>.</p>
<div id="a-note-on-versions" class="section level3">
<h3>A Note on Versions</h3>
<p>A released version number consists of three numbers, <code>major.minor.patch</code>. <a href="http://semver.org/">Semantic Versioning 2.0.0</a> is a good specification to follow because <code>numeric_version</code> will interpret it correctly:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">numeric_version</span>(<span class="st">&quot;0.1.0&quot;</span>) <span class="op">==</span><span class="st"> </span><span class="kw">numeric_version</span>(<span class="st">&quot;0.1&quot;</span>)</code></pre></div>
<pre><code>## [1] TRUE</code></pre>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="co"># First release!</span>
<span class="kw">numeric_version</span>(<span class="st">&quot;0.0.1&quot;</span>) <span class="op">&gt;</span><span class="st"> </span><span class="kw">numeric_version</span>(<span class="st">&quot;0.0.0.9000&quot;</span>)</code></pre></div>
<pre><code>## [1] TRUE</code></pre>
<p>This is important because RInno determines the <code>local_version</code> of the app via <code>installed.packages()</code>. If R cannot parse the version correctly, the continuous installation will be… nonstop. Users will love you.</p>
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